<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
<h2>首页</h2>
<hr>

{% if username %}
    <p>
        当前用户名：{{ username }}，
        <a href="/logout/">注销</a>
    </p>

{% else %}
    <a href="/login/">登录</a>
{% endif %}

</body>
</html>